Automatic sludge discharging device of magnetic filter

Abstract

The invention provides an automatic sludge discharge device of a magnetic filter, which comprises a box body, a magnetic bar chain, a scraper plate, a swing arm and a scraper blade, the magnetic bar chain is used for adsorbing ferromagnetic impurities in liquid flowing through the bottom of the box body; the scraping plate can move to the position close to the magnetic bar chain, so that ferromagnetic impurities and sludge on the magnetic bar chain are scraped off through the scraping plate; one end of the swing arm is connected with an output shaft of the driving motor, the scraping piece is arranged at one end of a swing rod, the other end of the swing rod is rotatably connected with the other end of the swing arm, the middle of the swing rod is rotatably connected to the inner wall of the box body through a rotating shaft, and the positions of the swing rod and the scraping piece are changed through the swing arm. Therefore, the edge of the scraper blade can be tightly attached to the side wall face, opposite to the magnetic bar chain, of the scraper blade. The technical problem that a sludge layer bonded on the surface of the scraper in the magnetic filter cannot be automatically and efficiently removed is solved.

Description

Technical Field

[0001] This invention relates to the field of strip steel production technology, and in particular to an automatic mud removal device for a magnetic filter. Background Technology

[0002] Magnetic filters are key purification equipment in modern cold-rolled strip steel production lines (such as cold rolling mills and degreasing and cleaning lines). They remove iron powder impurities from emulsions and cleaning solutions through magnetic attraction, ensuring the cleanliness of the strip steel surface. The adsorption and cleaning effect achieved by magnetic filters directly affects the quality of subsequent products (such as high-value-added products like automotive steel sheets and appliance steel sheets).

[0003] Currently, chain-bar permanent magnet filters are widely used due to their stable structure and high adsorption efficiency. A chain-bar permanent magnet filter mainly consists of a chain of magnetic bars, a sludge scraping mechanism, and a housing. The magnetic bar chain circulates under the action of a drive unit, adsorbing iron-containing particles in the liquid. The sludge scraping mechanism uses scrapers that reciprocate across the surface of the magnetic bars to remove the sludge adsorbed by the bars. However, existing sludge scraping mechanisms have serious technical defects. Because the sludge scraped off by the scrapers is extremely sticky, it currently relies solely on its own gravity to fall off naturally. In actual operation, the sludge stubbornly adheres to the surface of the scrapers and gradually dries, forming a buildup layer. This results in uneven contact pressure between the scrapers and the magnetic bars, significantly reducing the scraping efficiency. Furthermore, the continuous thickening of the adhered sludge increases the load on the drive unit that drives the scrapers, especially creating a resistance peak at the end of the scraping stroke. Long-term operation can easily lead to drive structure deformation, chain tooth skipping, or even motor overload and burnout, causing unplanned downtime.

[0004] It is evident that current technologies focus more on the sludge removal effect of magnetic rods, while neglecting the closed-loop requirement of scraper self-cleaning. When sludge cakes on the scraper surface, manual cleaning is the only option, increasing maintenance costs and causing production line interruptions, severely restricting unit operating efficiency. Therefore, there is an urgent need to develop an automatic sludge removal mechanism integrated into the magnetic filter, capable of actively removing sludge adhering to the scraper, breaking through the passive reliance on gravity-based removal in current technologies, and fundamentally improving the continuous operation stability and service life of the equipment.

[0005] Existing magnetic filter sludge scraping mechanisms often employ chain drive, such as the Chinese utility model patent with application number 202222550421.4 and invention title "A Sludge Scraping Mechanism for a Magnetic Filter." This patent uses a chain to drive the scraping components for scraping, but it does not change the single dependence on the mechanical transmission structure and the physical characteristics of sludge adhesion. Moreover, it ignores the self-cleaning requirement of the scraper (i.e., neither the upper nor lower scraper surfaces have any active sludge removal design), resulting in high-viscosity sludge continuously accumulating on the scraper surface and still being unable to be efficiently removed. Furthermore, high-viscosity sludge can easily cause the moving parts in the magnetic filter sludge scraping mechanism to jam, requiring daily shutdown for manual cleaning of the sludge.

[0006] There is currently no effective solution to the problem that related technologies cannot automatically and efficiently remove the sludge layer adhering to the scraper surface in magnetic filters.

[0007] Therefore, this invention proposes an automatic sludge removal device for magnetic filters to overcome the shortcomings of existing technologies. Summary of the Invention

[0008] The purpose of this invention is to provide an automatic sludge removal device for a magnetic filter. Through the cooperation of scraper and scraper blade, while scraping the sludge off the magnetic rod chain in the forward direction, the scraper blade can remove the sludge adhering to the scraper surface in the return state, forming a dynamic mutual cleaning mode of "magnetic rod chain-scraper-scraper blade", ensuring the cleanliness of the scraper surface, ensuring the long-term and stable working state of the scraper, and significantly reducing operation and maintenance costs.

[0009] The objective of this invention can be achieved through the following methods:

[0010] This invention provides an automatic sludge removal device for a magnetic filter, comprising:

[0011] Box;

[0012] A magnetic rod chain that operates vertically is located inside the housing and is used to adsorb ferromagnetic impurities in the liquid flowing through the bottom of the housing.

[0013] A scraper is movably disposed within the housing and is movable to a position close to the magnetic rod chain to scrape away ferromagnetic impurities and sludge from the magnetic rod chain.

[0014] A swing arm, one end of which is connected to the output shaft of a drive motor;

[0015] A scraper is disposed at one end of a swing rod, the other end of which is rotatably connected to the other end of a swing arm. The middle part of the swing rod is rotatably connected to the inner wall of the housing via a pivot. The position of the swing rod and the scraper is changed by the swing arm so that the edge of the scraper can be close to the scraper and the side wall opposite to the magnetic rod chain.

[0016] In a preferred embodiment of the present invention, the magnetic filter automatic mud discharge device further includes a compression spring, one end of which is connected to the top inner wall of the housing, and the other end of which is connected to the swing rod;

[0017] The connection point between the compression spring and the swing arm is located between the rotating shaft and the scraper. During the upward movement of the scraper, the compression spring pushes the swing arm closer to the scraper, so that the edge of the scraper is in close contact with the scraper and the side wall opposite to the magnetic rod chain.

[0018] In a preferred embodiment of the present invention, a recycling tank is provided below the scraper, the recycling tank being used to recycle the ferromagnetic impurities and sludge scraped off the magnetic rod chain by the scraper, as well as the ferromagnetic impurities and sludge scraped off the scraper by the scraper blade.

[0019] In a preferred embodiment of the present invention, the recycling tank is inclined and a material leakage port is provided at the bottom of the recycling tank;

[0020] A screw conveyor is installed below the recycling tank. The inlet of the screw conveyor is connected to the outlet of the recycling tank, and the bottom of the screw conveyor is provided with a discharge outlet.

[0021] In a preferred embodiment of the present invention, the feed inlet of the screw conveyor and the discharge outlet of the recycling tank are connected by a flange to form a closed channel between the feed inlet of the screw conveyor and the discharge outlet of the recycling tank.

[0022] In a preferred embodiment of the present invention, a mounting platform is provided on the housing, and the drive motor is mounted on the mounting platform via a base.

[0023] In a preferred embodiment of the present invention, the magnetic filter automatic sludge discharge device further includes a first drive shaft and a second drive shaft, both of which are located inside the housing. The first drive shaft is rotatably disposed on the top of the housing, and the second drive shaft is rotatably disposed on the bottom of the housing. The magnetic rod chain is sleeved on the first drive shaft and the second drive shaft.

[0024] In a preferred embodiment of the present invention, there are multiple magnetic rod chains, and the multiple magnetic rod chains are arranged continuously in the horizontal direction.

[0025] In a preferred embodiment of the present invention, a translation mechanism and a swing mechanism are provided inside the box. The translation mechanism is disposed on the inner wall of the box, the swing mechanism is disposed at the actuating end of the translation mechanism, and the scraper is disposed at the actuating end of the swing mechanism. The translation mechanism and the swing mechanism cooperate to move the scraper to a position close to the magnetic rod chain.

[0026] In a preferred embodiment of the present invention, the bottom of the housing has a liquid inlet and a liquid outlet.

[0027] Based on the above, the features and advantages of the automatic sludge removal device for magnetic filters of the present invention are as follows:

[0028] A movable scraper is provided on one side of the magnetic rod chain. As the chain moves upwards, the scraper moves to a position close to the chain, thus removing ferromagnetic impurities and sludge. Simultaneously, a scraper blade is connected to a swing arm via a swing rod. The middle of the swing rod is rotatably connected to the inner wall of the housing via a pivot. In actual use, the position of the swing rod and scraper blade is adjusted by the swing arm, positioning the scraper blade at a preset position. At this preset position, the edge of the scraper blade is aligned with the scraper blade during the upward return stroke. The scraper blades adhere tightly to one side wall of the magnetic rod chain, allowing ferromagnetic impurities and sludge on its surface to be cleaned and removed during the return stroke of the scraper. Therefore, this invention, through the cooperation of the scraper and the scraper blades, removes ferromagnetic impurities and sludge from the magnetic rod chain by scraping it forward, while simultaneously removing ferromagnetic impurities and sludge adhering to the scraper surface during the return stroke. This forms a dynamic mutual cleaning method of "magnetic rod chain-scraper-scraper blade," ensuring the cleanliness of the scraper surface, guaranteeing the long-term and stable operation of the scraper, and significantly reducing maintenance costs. Attached Figure Description

[0029] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

[0030] Figure 1 This is a front view of the automatic sludge removal device for the magnetic filter of the present invention;

[0031] Figure 2 This is a right view of the automatic sludge removal device for the magnetic filter of the present invention;

[0032] Figure 3 for Figure 2 A magnified view of a portion of position A in the middle.

[0033] The reference numerals in the accompanying drawings of this invention are:

[0034] 1. Housing; 101. Liquid inlet; 102. Liquid outlet; 2. Magnetic rod chain; 3. First drive shaft; 4. Second drive shaft; 5. Swing arm; 6. Base; 7. Placement platform; 8. Drive motor; 9. Scraper; 10. Scraper blade; 11. Swing rod; 12. Compression spring; 13. Recovery tank; 14. Screw conveyor; 15. Discharge outlet; 16. Rotary shaft. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0036] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] like Figures 1 to 3As shown, the present invention provides an automatic sludge removal device for a magnetic filter. The automatic sludge removal device for a magnetic filter includes a housing 1, a magnetic rod chain 2, a scraper 9, a swing arm 5, and a scraper blade 10. The magnetic rod chain 2 moves vertically within the housing 1. That is, the magnetic rod chain 2 at the bottom of the housing 1 can adsorb ferromagnetic impurities in the liquid flowing through the bottom of the housing 1. The magnetic rod chain 2 with adsorbed ferromagnetic impurities moves vertically from bottom to top. During this process, the scraper 9 located above scrapes away the ferromagnetic impurities and sludge on the magnetic rod chain 2. The scraper 9 is movably disposed within the housing 1. Before the magnetic rod chain 2 moves upward, the position of the scraper 9 is pre-adjusted to be close to the magnetic rod chain 2. Thus, when the magnetic rod chain 2 moves upward, the scraper 9 can scrape off ferromagnetic impurities and sludge from the magnetic rod chain 2, achieving the purpose of cleaning the magnetic rod chain 2. One end of the swing arm 5 is connected to the output shaft of the drive motor 8, and the scraper 10 is disposed at one end of a swing rod 11. The other end of the swing rod 11 is rotatable with the other end of the swing arm 5. The swing arm 11 is rotatably connected to the inner wall of the housing 1 via a pivot 16. The swing arm 5 is moved by the drive motor 8, which in turn changes the position of the swing arm 11 and the scraper 10 so that the edge of the scraper 10 can be close to the scraper 9 and the side wall opposite to the magnetic rod chain 2 (when the side wall of the scraper 10 is close to the magnetic rod chain 2, most of the magnetic impurities and sludge scraped off by the magnetic rod chain 2 adhere to and accumulate on the scraper 9 and the side wall opposite to the magnetic rod chain 2).

[0039] This invention features a movable scraper 9 on one side of the magnetic rod chain 2. As the magnetic rod chain 2 moves upwards, the scraper 9 can move to a position close to the chain, thus scraping away ferromagnetic impurities and sludge. Simultaneously, a scraper blade 10 is connected to the swing arm 5 via a swing rod 11. The middle of the swing rod 11 is rotatably connected to the inner wall of the housing 1 via a pivot 16. In actual use, the positions of the swing rod 11 and the scraper blade 10 are adjusted by the swing arm 5, positioning the scraper blade 10 at a preset position. At this preset position, the edge of the scraper blade 10 is aligned with the scraper 9 during the upward return stroke. The scraper blade 10 cleans and removes ferromagnetic impurities and sludge from the surface of the magnetic rod chain 2 when it is in the return stroke state. Thus, the present invention, through the cooperation of the scraper blade 9 and the scraper blade 10, removes ferromagnetic impurities and sludge from the magnetic rod chain 2 by scraping it in the forward stroke while the scraper blade 9 removes ferromagnetic impurities and sludge adhering to the surface of the scraper blade 9 in the return stroke state. This forms a dynamic mutual cleaning mode of "magnetic rod chain 2-scraper blade 9-scraper blade 10", ensuring that the scraper blade 9 remains clean even in long-term working conditions, guaranteeing the long-term and stable working state of the scraper blade 9, and significantly reducing maintenance costs.

[0040] In an optional embodiment of the present invention, such as Figures 2 to 3As shown, the automatic sludge removal device of the magnetic filter also includes a clamping spring 12. One end of the clamping spring 12 is connected to the top inner wall of the housing 1, and the other end of the clamping spring 12 is connected to the swing arm 11. The connection point between the clamping spring 12 and the swing arm 11 is located between the rotating shaft 16 and the scraper 10. The swing arm 5 is positioned at a preset angle. At this time, the scraper 10 is suspended above the upward return trajectory of the scraper 9. When the scraper 9 interferes with the scraper 10 during the upward return process, the clamping spring 12 pushes the swing arm 11 and the side close to the scraper 10 so that the edge of the scraper 10 is close to the scraper 9 and the side wall opposite to the magnetic rod chain 2, ensuring that the scraper 10 can scrape off the ferromagnetic impurities and sludge adhering to the scraper 9.

[0041] In an optional embodiment of the present invention, such as Figure 1 As shown, a recovery trough 13 is provided below the scraper 9. The recovery trough 13 is used to recover the ferromagnetic impurities and sludge scraped off the magnetic rod chain 2 by the scraper 9, as well as the ferromagnetic impurities and sludge scraped off the scraper blade 10 on the scraper 9. That is, the ferromagnetic impurities and sludge scraped off the magnetic rod chain 2 by the scraper 9 and the ferromagnetic impurities and sludge scraped off the scraper blade 10 on the scraper 9 will all fall into the recovery trough 13. The cross-section of the recovery trough 13 may be, but is not limited to, "V" shaped.

[0042] Furthermore, such as Figure 1 As shown, the recycling tank 13 is inclined, and a discharge port is provided at the bottom of the lower side of the recycling tank 13. A screw conveyor 14 is provided below the recycling tank 13. The inlet of the screw conveyor 14 is connected to the discharge port of the recycling tank 13, and the bottom of the screw conveyor 14 is provided with a discharge port 15. Ferromagnetic impurities and sludge in the recycling tank 13 will slide to the discharge port and fall into the screw conveyor 14. Then, the screw conveyor 14 will continuously discharge the received ferromagnetic impurities and sludge.

[0043] In this embodiment, the feed inlet of the screw conveyor 14 and the discharge port of the recycling tank 13 are connected by a flange to form a closed channel between the feed inlet of the screw conveyor 14 and the discharge port of the recycling tank 13, so as to ensure that all ferromagnetic impurities and sludge discharged from the recycling tank 13 enter the screw conveyor 14 without leakage.

[0044] In an optional embodiment of the present invention, such as Figure 2 and Figure 3 As shown, a mounting platform 7 is provided on the housing 1, and the drive motor 8 is mounted on the mounting platform 7 via the base 6.

[0045] In an optional embodiment of the present invention, such as Figure 1 and Figure 2As shown, the automatic sludge removal device for the magnetic filter also includes a first drive shaft 3 and a second drive shaft 4. Both the first drive shaft 3 and the second drive shaft 4 are located inside the housing 1, with the first drive shaft 3 rotatably mounted on the top of the housing 1 and the second drive shaft 4 rotatably mounted on the bottom of the housing 1. The magnetic rod chain 2 is sleeved on the first drive shaft 3 and the second drive shaft 4. One of the first drive shaft 3 and the second drive shaft 4 is a driving shaft, and the other is a driven shaft. The driving shaft is connected to the output shaft of the motor, and the electrodes drive the driving shaft to rotate, thereby providing power for the operation of the magnetic rod chain 2.

[0046] In an optional embodiment of the present invention, such as Figure 1 and Figure 2 As shown, there are multiple magnetic rod chains 2, which are arranged continuously in the horizontal direction.

[0047] In an optional embodiment of the present invention, a translation mechanism and a swing mechanism are provided inside the housing 1. The translation mechanism is disposed on the inner wall of the housing 1, the swing mechanism is disposed at the actuating end of the translation mechanism, and the scraper 9 is disposed at the actuating end of the swing mechanism. The translation mechanism and the swing mechanism work together to move the scraper 9 to a position close to the magnetic rod chain 2 and scrape the surface of the magnetic rod chain 2. The translation mechanism can be, but is not limited to, a lead screw structure disposed on the inner wall of the housing 1, and the swing mechanism can be, but is not limited to, a linkage structure. Of course, the translation mechanism and the swing mechanism can also be other existing drive mechanisms (such as a robotic arm capable of multi-degree-of-freedom movement), as long as they can achieve accurate displacement of the scraper 9.

[0048] In an optional embodiment of the present invention, such as Figure 1 As shown, the bottom of the housing 1 has a liquid inlet 101 and a liquid outlet 102, so as to allow liquid to enter the housing 1 and liquid to be discharged.

[0049] The working process of this invention is as follows:

[0050] In the initial state, scraper 10 hangs directly above the upward return trajectory of scraper 9. Scraper 9 first swings down to press against the surface of magnetic rod chain 2 and scrapes away ferromagnetic impurities and sludge from the magnetic rod chain 2. The ferromagnetic impurities and scraped-off sludge fall directly into the recovery tank 13. When scraper 9, which avoids the adhesion of ferromagnetic impurities and sludge, moves upward back to the end of the stroke, the surface of scraper 9 facing away from magnetic rod chain 2 contacts scraper 10. As scraper 9 continues to move upward, scraper 10 and scraper 9 facing away from magnetic rod chain 2... 2. Mechanical interference on one side of the surface, thereby scraping off the ferromagnetic impurities and sludge on the surface of the scraper 9 by the scraper blade 10. The stripped ferromagnetic impurities and sludge can fall or be guided by the swing arm 5 into the recycling tank 13. The screw conveyor 14 outputs the ferromagnetic impurities and sludge in the recycling tank 13 to the external collection bucket for centralized collection in a continuous rotating manner. When the scraper 9 continues to move upward and completely disengages from the scraper blade 10, the compression spring 12 pushes the swing arm 11 back to the initial suspended position, waiting for the next working cycle.

[0051] The entire process is conducted without air blowing, which effectively avoids the risk of emulsion contamination.

[0052] The features and advantages of the automatic sludge removal device for magnetic filters of the present invention are as follows:

[0053] This automatic sludge removal device for magnetic filters works in conjunction with a swing arm 5, a pressure spring 12, and a scraper 10. The scraper 10 mechanically interferes with the scraper 9 during its upward return stroke, actively peeling off and removing ferromagnetic impurities and sludge remaining on the scraper 9. Combined with the recovery tank 13 and the screw conveyor 14, the device achieves the recovery and centralized discharge of the scraped ferromagnetic impurities and sludge, realizing a closed-loop treatment process of "sludge scraping-self-cleaning-sludge discharge". The device has a simple and reliable structure, significantly reducing operation and maintenance costs. While ensuring the cleanliness of the scraper 9 surface, it breaks through and solves several problems in existing technologies, such as uncontrolled sludge adhesion, secondary pollution, and high-frequency maintenance.

[0054] The technical solution of this invention can achieve at least three safety guarantees during the entire operation: it can simultaneously clean the surface of the magnetic rod chain 2 and the scraper 9, completely avoiding the risk of sludge caking caused by the failure of traditional gravity-based detachment; the swing arm 5, together with the reset mechanism of the pressure spring 12 and the suspension setting of the scraper 10, can ensure that the scraper 9 can accurately trigger the cleaning action of the scraper 10 each time it moves up and back, eliminating manual intervention and effectively reducing the workload of the staff; the setting of the recycling tank 13 and the screw conveyor 14 can realize continuous slag discharge, eliminating the risk of emulsion pollution caused by the air blowing scheme from the root.

[0055] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0056] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0057] The above are merely a few embodiments of the present invention. Although the embodiments disclosed in the present invention are as described above, the content is only for the purpose of facilitating understanding of the present invention and is not intended to limit the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. An automatic sludge removal device for a magnetic filter, characterized in that, include: Box; A magnetic rod chain that operates vertically is located inside the housing and is used to adsorb ferromagnetic impurities in the liquid flowing through the bottom of the housing. A scraper is movably disposed within the housing and is movable to a position close to the magnetic rod chain to scrape away ferromagnetic impurities and sludge from the magnetic rod chain. A swing arm, one end of which is connected to the output shaft of a drive motor; A scraper is disposed at one end of a swing rod, the other end of which is rotatably connected to the other end of a swing arm. The middle part of the swing rod is rotatably connected to the inner wall of the housing via a pivot. The position of the swing rod and the scraper is changed by the swing arm so that the edge of the scraper can be close to the scraper and the side wall opposite to the magnetic rod chain.

2. The automatic sludge discharge device for magnetic filters as described in claim 1, characterized in that, The automatic sludge discharge device of the magnetic filter also includes a compression spring, one end of which is connected to the top inner wall of the housing, and the other end of which is connected to the swing rod; The connection point between the compression spring and the swing arm is located between the rotating shaft and the scraper. During the upward movement of the scraper, the compression spring pushes the swing arm closer to the scraper, so that the edge of the scraper is in close contact with the scraper and the side wall opposite to the magnetic rod chain.

3. The automatic sludge discharge device for magnetic filters as described in claim 1, characterized in that, A recycling tank is provided below the scraper, which is used to recycle the ferromagnetic impurities and sludge scraped off the magnetic rod chain by the scraper, as well as the ferromagnetic impurities and sludge scraped off the scraper by the scraper blade.

4. The automatic sludge discharge device for magnetic filters as described in claim 3, characterized in that, The recycling tank is inclined and has a material leakage port at the bottom. A screw conveyor is installed below the recycling tank. The inlet of the screw conveyor is connected to the outlet of the recycling tank, and the bottom of the screw conveyor is provided with a discharge outlet.

5. The automatic sludge discharge device for magnetic filters as described in claim 4, characterized in that, The feed inlet of the screw conveyor is connected to the discharge outlet of the recycling tank via a flange to form a closed channel between the feed inlet of the screw conveyor and the discharge outlet of the recycling tank.

6. The automatic sludge discharge device for magnetic filters as described in claim 1, characterized in that, The housing is provided with a mounting platform, and the drive motor is mounted on the mounting platform via a base.

7. The automatic sludge discharge device for magnetic filters as described in claim 1, characterized in that, The automatic sludge removal device of the magnetic filter also includes a first drive shaft and a second drive shaft. Both the first drive shaft and the second drive shaft are located inside the housing. The first drive shaft is rotatably disposed on the top of the housing, and the second drive shaft is rotatably disposed on the bottom of the housing. The magnetic rod chain is sleeved on the first drive shaft and the second drive shaft.

8. The automatic sludge discharge device for a magnetic filter as described in claim 1 or 7, characterized in that, The number of magnetic rod chains is multiple, and the multiple magnetic rod chains are arranged continuously in the horizontal direction.

9. The automatic sludge discharge device for magnetic filters as described in claim 1, characterized in that, The box is equipped with a translation mechanism and a swing mechanism. The translation mechanism is located on the inner wall of the box, and the swing mechanism is located at the actuating end of the translation mechanism. The scraper is located at the actuating end of the swing mechanism. The translation mechanism and the swing mechanism work together to move the scraper to a position close to the magnetic rod chain.

10. The automatic sludge discharge device for magnetic filters as described in claim 1, characterized in that, The bottom of the box has a liquid inlet and a liquid outlet.

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